The act of "Getting in" wit a girl or guy by expressing how environmentally friendly ones self is. In theory the oppisate sex should be attracted by someone who "Helps" the environment. A Frugalationship can be real or fake, although it would be better if it was real.

What a man whore... Him and his Frugalationships.
Jeez... Bob really uses the Frugalationship card well.
It was a great Frugalationship.